* Transport:

- Add a simple network monitor
  - Add new reachability state for network disconnected
  - Prevent any tunnel building when disconnected (ticket #519)
  - Don't unleash watchdog when disconnected

apps/routerconsole/java/src/net/i2p/router/web/SummaryHelper.java

@@ -171,6 +171,8 @@ public class SummaryHelper extends HelperBase {
                 //if (_context.router().getRouterInfo().getCapabilities().indexOf('O') >= 0)
                 //    return _("WARN-Firewalled and Fast");
                 return _("Firewalled");
+            case CommSystemFacade.STATUS_DISCONNECTED:
+                return _("Disconnected - check network cable");
             case CommSystemFacade.STATUS_HOSED:
                 return _("ERR-UDP Port In Use - Set i2np.udp.internalPort=xxxx in advanced config and restart");
             case CommSystemFacade.STATUS_UNKNOWN: // fallthrough